#include<stdio.h>
  2 #define N 10
  3 int main()
  4 {
  5   printf("Hello,Linux!\n");
  6   //printf("Hello,Linux!\n");
  7   //printf("Hello,Linux!\n");
  8   printf("Hello,Linux!\n");
  9   printf("N=%d\n",N);
 10   return 0;
  }
